var myErr='';
var addErr=false;


function PhoneValidation(s, errorMsg) {
 
 
var success = true;

var matchArr = s.match(/^(\d{3})-?\d{3}-?\d{4}$/);

if (matchArr == null) {
	success = false;
}
if (success != true)
		{myErr+='* '+errorMsg+'<br>';}
	return (success);
 
}


function validCheckBox(myField, errorMsg) {
	var success = false;
	
	success = myField.checked;
	if (success != true)
		{myErr+='* '+errorMsg+'<br>';}
	return (success);
}
function validRadio(myField, errorMsg) {
	var success = false;
	var myRadios=myField;
	for (var i=0; i<myRadios.length;i++)
		{
		if(myRadios[i].checked) 
		{	
			success = true;
		}
	}		
	if (success != true)
		{myErr+='* '+errorMsg+'<br>';}
	return (success);
}
				

function validCCForm(ccTypeField,ccNumField) {
	
	errorMsg = "Credit Card info not valid!";
	var success = isValidCreditCardNumber(ccNumField,ccTypeField.value,"Credit Card Number");
	
	if (success != true)
		{myErr+='* '+errorMsg+'<br>';}
	return (success);
	
	
}


function isValidCreditCardNumber(formField,ccType,fieldLabel)
{
	var result = true;
 	var ccNum = formField.value;
	
   
	 
  	if (result && (formField.value.length>0))
 	{ 
 		
		if (!allDigits(ccNum))
 		{
 			alert('Please enter only numbers (no dashes or spaces) for the "' + fieldLabel +'" field.');
			formField.focus();
			result = false;
		}	

		if (result)
 		{ 
 			
 			if (!LuhnCheck(ccNum) || !validateCCNum(ccType,ccNum))
 			{
 				alert('Please enter a valid card number for the "' + fieldLabel +'" field.');
				formField.focus();
				result = false;
			}	
		} 

	} 
	
	return result;
}


function LuhnCheck(str) 
{
  var result = true;

  var sum = 0; 
  var mul = 1; 
  var strLen = str.length;
  
  for (i = 0; i < strLen; i++) 
  {
    var digit = str.substring(strLen-i-1,strLen-i);
    var tproduct = parseInt(digit ,10)*mul;
    if (tproduct >= 10)
      sum += (tproduct % 10) + 1;
    else
      sum += tproduct;
    if (mul == 1)
      mul++;
    else
      mul--;
  }
  if ((sum % 10) != 0)
    result = false;
    
  return result;
}

function allDigits(str)
{
	return inValidCharSet(str,"0123456789");
}

function inValidCharSet(str,charset)
{
	var result = true;
	
	for (var i=0;i<str.length;i++)
		if (charset.indexOf(str.substr(i,1))<0)
		{
			result = false;
			break;
		}
	
	return result;
}

function validateCCNum(cardType,cardNum)
{
	var result = false;
	cardType = cardType.toUpperCase();
	
	var cardLen = cardNum.length;
	var firstdig = cardNum.substring(0,1);
	var seconddig = cardNum.substring(1,2);
	var first4digs = cardNum.substring(0,4);

	switch (cardType)
	{
		case "VISA":
			result = ((cardLen == 16) || (cardLen == 13)) && (firstdig == "4");
			break;
		case "AMEX":
			var validNums = "47";
			result = (cardLen == 15) && (firstdig == "3") && (validNums.indexOf(seconddig)>=0);
			break;
		case "MASTER":
			var validNums = "12345";
			result = (cardLen == 16) && (firstdig == "5") && (validNums.indexOf(seconddig)>=0);
			break;
		case "DISCOVER":
			result = (cardLen == 16) && (first4digs == "6011");
			break;
		case "DINERS":
			var validNums = "068";
			result = (cardLen == 14) && (firstdig == "3") && (validNums.indexOf(seconddig)>=0);
			break;
	}
	return result;
}


function MM_findObj(n, d) { //v4.01
 
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function validate_len(fieldName,minLen,maxLen,errorMsg){
	
	var str;
	var re=/^(\s*)$/;
	fv=MM_findObj(fieldName).value;
	
	if(re.test(fv))
			{fv=fv.replace(re,"");
		}
	if(fv.length<minLen||fv.length>maxLen){myErr+='* '+errorMsg+'<br>';}
}

function isValidSelectBox(o, errorMsg) {
	
	success = o.options[o.selectedIndex].value != "";
			
	if (success != true)
		{myErr+='* '+errorMsg+'<br>';}
	return (success);
	
}

function isValidZipCode(s, errorMsg) {
	
	var temp = s.replace(/\D/g, "")
	var success = (temp.match(/^\d{5}$|^\d{9}$/) != null)
	
	if (success != true)
		{myErr+='* '+errorMsg+'<br>';}
	return (success);
		
}

function isValidEmailAddress(s, errorMsg) {
	var temp = s.replace(/\s/g, "")
	
	 
	var success = (temp.match(/^[a-zA-Z][\w\.-]*[a-zA-Z0-9]@[a-zA-Z0-9][\w\.-]*[a-zA-Z0-9]\.[a-zA-Z][a-zA-Z\.]*[a-zA-Z]$/)) && 
			temp.charAt(0) != "." && !(temp.match(/\.\./))
			
	if (success != true)
		{myErr+='* '+errorMsg+'<br>';}
	return (true);
}